CVE-2025-15571

ckolivas lrzip stream.c ucompthread null pointer dereference

MEDIUM
5.5
CVSS Score
Published: February 10, 2026 at 02:32 PM UTC
Updated: June 17, 2026 at 08:38 AM UTC
1 product affected across 1 vendorLrzip

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

A security vulnerability has been detected in ckolivas lrzip up to 0.651. This vulnerability affects the function ucompthread of the file stream.c. Such manipulation leads to null pointer dereference. The attack can only be performed from a local environment. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 0.6510.651

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.344931
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.344931
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.752603
Issue TrackingExploit
Source: cverecord
https://github.com/ckolivas/lrzip/issues/263
Product
Source: cverecord
https://github.com/ckolivas/lrzip/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-476CWE-404

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